Final answer:
Electromagnetic radiation consists of seven types with varying wavelengths, from radio waves to gamma rays. Each type has specific uses such as communication, medical imaging, and cancer treatment.
Step-by-step explanation:
Electromagnetic radiation consists of seven types classified by their wavelengths, ranging from the longest to the shortest. These types are: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
Examples of each type include:
Radio waves: Used for communication, such as broadcasting and cellphone signals.Microwaves: Used in microwave ovens and for satellite communication.Infrared: Used in remote controls, infrared cameras, and heat therapy.Visible light: Enables us to see and is responsible for colors.Ultraviolet: Causes tanning and is used in germicidal lamps.X-rays: Used in medical imaging and security screening.Gamma rays: Used in cancer treatment and nuclear medicine.